Tube of axminster and like carpet looms and method of threading the same



Dec. '23, 1924. 1,520,595

v E. J. PERRY Wig mj .3. mii/gi N w we t6 'w w [m4 "f 2f w 131g: 7. y

Patented Dec. 23, 1924.

PATENT OFFICE.

UNITED STATES ERNEST JOSEPH PERRY, OF BIRMINGHAM, ENGLAND.

TUBE 0F AXMINS'TER AND LIKE CARPET LOOMS AND METHOD OF' THREADING THE SAME.

Application led October 11, 1922.

To @ZZ whom t may concern.:

Be it known that I, ERNEST JOSEPH PERRY, subject of the Kingdom of Great Britain, residing at 68 Heathmill Lane, Birmingham, in the county of Warwick, England, manufacturer, have invented certain new and useful Improvements in or Relating to the Tubes of Axminster and like Carpet Looms and Methods of Threading the Same, of which the following is a specification.

This invention comprises certain improvements in or relating to the tubes of AXminster and like carpet looms, and to the method of threading` the same.

In Axminster carpet looms as hitherto in use, the tubes, which are ordinarily of a tapering seamless metal construction and are mounted in project-ing parallel series on a stick disposed transversely in front of and in parallel relation to the bobbin, have been threaded either manually or mechanically by inserting the extreme ends of the threads axially into the inner ends or eyes of their respective tubes, and passing them straight through the bores thereof and out at the outer ends.

The present invention has for its pur pose the provision of tubes of such improved construction as to permit of an improved and simplified method of threading, which method consists in simply drawing the threads forwardly over the curved rear face of the stick and over the inner ends or eyes of the tubes, without the necessity of pass ing` the extreme ends of the threads into the eyes of the tubes.

For this purpose the invention consists essentially in forming each tube with a longitudinal slit through which the thread is adapted to be passed into the bore of the tube whilst being thus forwardly drawn over the inner end or eye of the tube. Advantageously said slit is formed in one of the upright sides of the tube, the upper edge of the eye of the tube having a lateral inclination towards the mouth of the slit to serve as a guide thereinto. A further feature consists in making the slit of a undulatory form to further facilitate the entry of the thread into the tube and to minimize its liability to accidental displacement therefrom.

In order that this invention may be clearly understood and readily carried into practice, reference may be had to the appended Serial No. 593,838.

explanatory sheet which Figure l is a sectional side elevation of the tubes and stick in operative relation to the bobbin, and illustrating the longitudinal threading slit in the tube in accordance with the invention.

Figure 2 is a fragmentary perspective view of the stick carrying the longitudinally slitted tubes.

Figures 3 to 6 are detail views of the tube detached, Figure 3 being a side elevation, Figure 4 being an inner end elevation, Figure 5 being an outer end elevation, and Figure 6 being a plan.

:Figure 7 is a plan of the blank from which the tube shown in Figures l to 6 is formed.

In a preferred embodiment of the invenof drawings, upon tion the tube ais of a tapering sheet metal construction, advantageously formed from a suitably shaped blank al (Figure 7), and of the ordinary pippin-shaped cross section. The two longitudinal sides a2 a3 of the sheet metal blank are of an undulatory and cornplementary form, and the blank is bent or folded into the desired tubular formation in such a manner that said complementary undulatory edges provide a narrow undulatory slit at extending from one end to the other of one of the upright sides of the tube. The inner end or eye of the tube is of substantially rectangular form in end elevation, see Figure 4, and its upper edge L5 is laterally and forwardly inclined towards the mouth a of the slit, which mouth a is somewhat widened or expanded vertically, with an iuclined and rounded shoulder a at its lower edge, the laterally inclined upper edge a5 cooperating with the inclined and rounded lower shoulder a7 to provide a means of guiding the thread b into the mouth of the slit, which mouth a is so disposed as to take advantage of the natura-l tendency of the threads b to pass between the tubes 'a in being drawn forwardly thereover. The undulatory slit a* may at its outer end be either downturned as shown in the drawings, or upturned, according to the type of tube to which the invention is applied.

To thread the tubes a, the threads b are simply drawn forwardly from the bobbin o over the curved rear face Z1 of the stick d and over the inner ends or eyes of the tubes, this action causing the threads to be guided llU through the slits/,a of tlreir'frespective' vitubes into their Workingpositions therein.

The tubes a as thus constructed are adapted for threadinoe byI the, irriprovedtmethod either individua ly or simultaneously. In :the latter case; theends ot the three ds* b l,on the bobbin are spaced and secured Withnia comb and sheath device of known form, consisting of a sheath ot-Ufsection and affcornb jointed in knifeblade form` thereto, this -cornb and'she'ath device enabling the entire series of threads b to be simultaneously drawn-over therearl-facepf thefstickd and rlover the-*inner ends or eyes ofr-the --t ubes a,

`in lthev necessary spaced relation', to -perniit of of their respective tubes.

What I claiin': as iny invention and-desire to secure by vLetters Patent is 1. A ,carpetI loom tube having'4 a"longitu dinal 'slit .inonebf the upright `sidesbl the tube,3 and also havingA a\vertie'ally wvidened mouth of substantially rectangular cross section-iat tlieyeend, @theifupper side of said mouth presenting a laterally inclined edge, xffwhigchleads; .to asaid: slit `to .serve as agguide -iat-hereinto.

2. A carpet loom tube having a longitudinal-fslitfiinone of Athe upright sides of the tube, and also having a vertically widened mouth of substantially rectangular cross secltion at the'feye end,` Ithe upperside of-said winouth:V presenting ai laterally- :inclinedf edge, lspaced-troni the inner endV of the tube5 which vwleadstol said-'slitftovaserveasa. guide thereinto.

In Witness wher-ect I have.hhereuntoset --1ny\-hand.

ERNEST# JGSEPII PERRY. 

